Finding the Fourth Proportional to 17,328.95, 25,990.71 and 5,642.09

Step by Step Solution

1. Step 1: Write the proportion equation
   17,328.95 : 25,990.71 = 5,642.09 : x
2. Step 2: Convert to fraction form
   17,328.95/25,990.71 = 5,642.09/x
3. Step 3: Cross multiply
   17,328.95x = 25,990.71 × 5,642.09
4. Step 4: Simplify right side
   17,328.95x = 146,641,924.98
5. Step 5: Solve for x
   x = 146,641,924.98/17,328.95
6. Step 6: Final answer
   x = 8,462.25